JP2016016508A - Fastening chuck having quick exchange function and fastening mechanism part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To constitute a fastening mechanism part (24) so as to be quickly exchangeable, in a fastening chuck (23) which comprises a chuck drive trunk body (3) having a guide opening (1) and a drive part (2), and at least one fastening mechanism part (24) which is insertable into the guide opening (1), and the fastening mechanism part (24).SOLUTION: There are arranged a rotating body (4), a lock member (5) and a segment (6) at a fastening mechanism part (24), and the lock member (5) non-rotatably fixes the rotating body (4) to a chuck drive trunk body (3) when inserting the fastening mechanism (24) into a guide opening (1). When rotating the fastening mechanism part (24) around a longitudinal direction in the guide opening (1), the segment (6) rotates with respect to the rotating body (4), and the fastening mechanism part (24) can be shifted to the chuck drive trunk body (3) side and to the outside in a position and a posture in order to be fixed to the chuck drive trunk body (3).SELECTED DRAWING: Figure 1

Description

  The present invention relates to a tightening chuck and a tightening mechanism.

  Certain clamping chucks (23) include a guide opening (1), a chuck trunk (3) and drive, and at least one replaceable clamping mechanism that can be inserted into the guide opening (1). (22) is provided (FIGS. 13 to 14). On the other hand, a certain tightening mechanism section includes a tightening mechanism section trunk (14), a convex shaft body (19) provided in the tightening mechanism section trunk, and a tightening member (20). Are provided (FIGS. 11-12).

  Such a clamping chuck is known by the technology actually implemented, and is provided by the applicant under the name “KZZT” (FIGS. 13 to 14). The tightening mechanism as described above is an extended tightening mandrel in a specific example, and is similarly known by the technology actually implemented, and is provided by the applicant under the name “ABSIS”. (FIGS. 11-12). In order to replace the tightening mechanism portion, it is usually necessary to remove the drive connection portion from the rod by pushing and pulling using a dedicated wrench tool. Next, it is necessary to set the other tightening mechanism portion to the drive connection portion, position it, and fix the mounting and fixing holes with screws. A different mounting method is possible by a bayonet connection between the push / pull rod and the tightening mechanism. At the time of this attachment, the tightening mechanism portion is applied by being rotated by the opening angle of the bayonet, and is attached by being rotated to the attachment / fixing hole. Both of these methods are laborious and costly for the following reasons. In other words, prior to installation, the tightening mechanism is complicatedly positioned and oriented with respect to the tightening chuck, and it is necessary to use a dedicated tool. Take it. Furthermore, in order to switch the method of the tightening mechanism, for example, to switch from the collet chuck to the extended tightening mandrel, it is necessary to replace not only the tightening mechanism itself but also the tightening chuck itself. To do. That is, when replacing the tightening mechanism, it is necessary to replace the two structural members.

German patent application published DE102011052546A1

  Therefore, the problem that forms the basis of the present invention is to configure a tightening chuck having a configuration as described in the introduction section so that the tightening mechanism section can be quickly replaced. Another object of the present invention is to constitute a tightening chuck so that various tightening mechanisms can be easily assembled with various connection mechanisms. The present invention is also useful for enabling a fastening mechanism portion having a connection mechanism portion to be particularly quickly assembled to a fastening chuck.

  The above problem is solved by the following in the drill chuck as described in the introduction section. The tightening mechanism portion includes a rotating body such as a ring shape or a disk shape, and a lock member. The lock member is fixed so as not to rotate with respect to the chuck trunk body when the tightening mechanism portion is inserted into the guide opening of the tightening chuck. Further, a segment is provided in the tightening mechanism portion. When the fastening mechanism is rotated around the longitudinal axis in the guide opening, the segment is positioned / postureed (at least one of the position and the posture) to the outside of the chuck trunk body by the relative rotation with respect to the rotating body. Can be shifted and serves to removably attach and fix the tightening mechanism to the chuck trunk.

  With such a configuration, the replacement of the tightening mechanism portion in the tightening chuck becomes remarkably easy and quick. This is because the locking member is fixed to the clamping chuck when the clamping member is inserted into the guide opening with respect to the position, posture and orientation of the clamping member. At the same time, the tightening mechanism portion is not only fixed by rotation like a conventional bayonet connection, but also the segment bites into the chuck trunk body and performs key insertion fixing. For replacement, a special tool is not required, and connection methods using various tightening mechanisms can be adopted for the structure of the tightening chuck.

FIG. 5 is a longitudinal sectional view showing the tightening chuck and the tightening mechanism according to the present invention in an interlocked position / posture. FIG. 2 is a longitudinal sectional view similar to FIG. 1, showing the tightening chuck and the tightening mechanism of FIG. 1 in a position / posture where the interlock is released. FIG. 3 is a partial cross-sectional perspective view showing the tightening chuck and the tightening mechanism portion of FIG. 1 in a position / posture where the interlock is released as in FIG. 2. FIG. 4 is a partial cross-sectional perspective view similar to FIG. 3, showing the tightening chuck and the tightening mechanism portion of FIG. 1 in an interlocked position / posture similar to FIG. 1. It is a cross-sectional view showing a VV cross section of FIG. It is a cross-sectional view which shows the VI-VI cross section of FIG. It is a fragmentary sectional perspective view shown about the connection mechanism part of a clamping mechanism part, and its press piece. It is a longitudinal cross-sectional view about the clamping chuck similar to FIG. 1 provided with the clamping mechanism part of deformation | transformation embodiment. It is a longitudinal direction sectional view shown in the state where it separated from others about the tightening mechanism part and its connection mechanism part according to the present invention. FIG. 6 is a perspective view showing the tightening mechanism portion according to the present invention in a state where the position / posture of the latching claw is shifted outward. It is a perspective view (photograph) of the assembled state about the extension fastening mandrel "ABSIS" which the present applicant has already provided. Corresponding to the tightening mechanism portion of FIG. 9, the corresponding members are denoted by the same reference numerals. FIG. 12 is an exploded perspective view (photo) of the extended fastening mandrel “ABSIS” of FIG. 11. Corresponding to the tightening mechanism portion of FIG. 9, the corresponding members are denoted by the same reference numerals. Except for the shape and groove of the outer surface of the tightening mechanism portion trunk and the connection mechanism portion, it has the same configuration as the tightening mechanism portion of FIG. FIG. 3 is a perspective view (photograph) showing a fastening chuck (“KZZT series”) that can be attached with a fastening mechanism portion already provided by the present applicant. It is a perspective view (photograph) shown about an example of the collet chuck which can be attached to the clamping chuck | zipper of FIG.

  Further, the following is assumed within the scope of the present invention. That is, it is assumed that the chuck trunk body is provided with a lock member receiving portion formed in the radial direction so as to receive a lock member protruding laterally from the rotating body. In this case, when the tightening mechanism portion is inserted into the guide opening, the position and direction of the tightening mechanism portion (at least one of the position in the rotation direction and the direction of the longitudinal axis) can be easily set. Can be fitted to the clamping chuck. In addition, in order to receive the lock member, a lock member receiving portion opened upward is provided in place of the recessed recess portion by the recess so that the lock member can be easily inserted into the side stopper protruding portion. Can be assumed. Instead of these, an embodiment using a latching recess provided with a spring can be assumed. It has been found that it is preferred if the locking member is in the form of a pin or a convex shaft with a tenon. It would also be possible to provide the locking member in the form of a ball.

  Further, it has become clear that the following is preferable. That is, if the segment and the rotating body are provided with an attachment / fixing member for connecting them, the fastening mechanism part is provided with a cover having a long hole, and the segment is provided with a fastening mechanism part. It has become clear that it would be preferable if a guide that would shift in the guide slot when provided was provided. After inserting the tightening mechanism into the guide opening, the position / posture of the tightening mechanism can be shifted around its longitudinal axis. In this way, the rotational position of the rotating body is fixed to the chuck trunk body by the lock member. By connecting the segment and the rotating body with an attachment / fixing member, the segment and the rotating body can move relative to each other when the tightening mechanism portion is rotated. Further, when the tightening mechanism portion is rotated, the position and posture of the segment are shifted outward so as to interact with the chuck trunk body by moving the guide tool in the guide elongated hole. Here, the rotation axis of the segment is determined and fixed by an attachment / fixing member. It has been found that it is preferable if the locking member is provided in the form of a convex shaft having a shaft or ridge or provided in the form of a pin.

  Within the framework of the invention, it has been found that the segment is preferably provided as a latching claw in the form of a ring or disk divided in the circumferential direction. The latching claw serves to connect the driving unit of the clamping chuck and the clamping mechanism unit. Instead of this, or in addition to this, the latching claw is useful for attaching and fixing the tightening mechanism portion in the tightening chuck so as to press the drive portion so as to realize interlocking by friction.

  It has been found that it would be quite desirable if the drive was provided with a recess that would serve to receive a segment whose position and orientation could be shifted outward. This recess plays the following role. That is, when the drive unit is operated in the tightening chuck, the operation mechanism in the tightening mechanism portion is moved by the action of the contact surface, and the tightening mechanism portion is thus tightened. Instead of, or in addition to, such actions and advantages, the recess that can receive the segment has the following advantages. That is, the fixing of the segment is further strengthened, and thereby, the fixing of the tightening mechanism portion is further strengthened by meshing or fitting.

  Further, within the framework of the present invention, the following is preferable. That is, in an embodiment in which a plurality of segments are provided, it is preferable if the segments are provided so as to be evenly distributed over the entire circumference, and the number of guides and attachment / fixing members corresponding to the number of segments are provided. Also, the cover is provided with the same number of guide slots as the guide, and the drive unit is provided with a corresponding number of recesses, or a groove-like recess extending over the entire inner periphery of the drive unit. Provided. In a preferred embodiment, the segments are formed by latching claws that form a ring with three distributed around the entire circumference. One end of each segment is contoured to the other end of the segment, and thus a space-saving arrangement is possible. In a preferred embodiment, the latching claw has a contour shape with rounded corners at one end and a claw receiving recess rounded to match the one end at the other end. In order to shift the position / posture of the latching claw outward, the latching claw is provided with a corresponding number of guides, and the cover is provided with the same number of guide slots as the guides. It has been found that it is preferable if each latching claw is provided with one guide, one attachment / fixing member, and one guide slot. Furthermore, the number of recesses in the drive unit must be matched to the number of latching claws. Here, it has become clear that it is preferable in the manufacturing process if these concave portions are ring-shaped concave portions arranged along the inner periphery of the driving portion and gathered together and recessed in the radial direction. An embodiment in which two latching members facing each other are provided in place of the latching claws arranged in a circumferential direction and arranged in a ring shape. In addition, it is possible not to be able to shift the position / posture of these latching members to the outside by a guide that can be displaced in the guide slot, but the following can also be assumed. That is, it can be assumed that the position / posture can be shifted outward by a three-dimensional shape that is rotatably attached and is located in the same plane as the latching claw. For example, it can be assumed that a rectangular parallelepiped or a prism is used. When such a rectangular parallelepiped or prism is rotated, this surface pushes the latch member outward. Instead of such a system, a latching claw supported by a spring can be assumed. This latching claw shifts its position and posture outward after being inserted into the fastening chuck.

  From the viewpoint of easily aligning the rotational position and orientation of the tightening mechanism when inserting it into the tightening chuck, the chuck trunk body is equipped with a fixture, and the tightening mechanism section of the tightening mechanism section. The trunk is provided with a guide groove, which is preferable if it allows non-rotating (translational) movement and rotational movement along a straight line with respect to the fixture of the tightening mechanism. . The advantage obtained by this is that the position and direction of the tightening mechanism can be easily aligned. A preferred embodiment for the fixture is a screw, but it can also be assumed to be a pin or a convex shaft with a protruding shaft. In providing the guide groove, it has become clear that the following is preferable. That is, if the part of the guide groove that allows the movement of the translational part extends parallel to the axis of the clamping mechanism and then the guide groove extends at right angles for rotational movement, It turned out to be preferable.

  In addition, with the help of a fixing tool, a fastening mechanism part having the following connection mechanism part different from the above can be fixed to the same fastening chuck. That is, it can be mounted and fixed by a connection mechanism portion that does not perform rotational movement and does not perform key insertion type fixing with a latching claw. In order to perform mounting and fixing, such another connecting mechanism is pushed into the guide opening of the clamping chuck. This tightening mechanism portion is provided with a tightening mechanism portion extraction portion extending along an axis parallel to the longitudinal axis of the tightening mechanism portion, instead of the guide groove having the translational motion region and the rotational motion region. The fixing tool of the tightening chuck can be projected into the tightening mechanism section extraction section. Mounting / fixing is performed by shifting the position / posture of the drive unit connected to the tightening mechanism when pulling / pushing / pushing / pushing force is applied to the rod. .

  The following is assumed within the framework of the present invention. That is, the tightening mechanism portion is provided with a pressing piece that receives a spring action in the pressing piece receiving portion, and this pressing piece is used to remove the rotating body when rotating the tightening mechanism portion with respect to the rotating body. It slides into a part (generally a recess or a through-hole), and helps to align the rotational position and orientation of the rotating body and the fastening mechanism with respect to the fastening chuck. Thereby, preliminary assembly can be easily performed.

  Furthermore, according to the present invention, the above-mentioned problem relating to the tightening mechanism is solved by the following in the tightening mechanism as described in the introduction section. That is, a connection mechanism portion is provided at an end opposite to the tightening member, and the connection mechanism portion includes at least one rotating body provided with a lock member, such as a ring shape or a disk shape, and outward. It consists of a combination including a segment whose position and orientation can be shifted and a cover.

  The following is particularly preferable. That is, in order to align the rotational position and orientation of the cover, the cover is connected to the convex shaft through the connecting member, and thus the rotational position and orientation of the guide slot is aligned. If present, it is particularly preferable.

  Next, the present invention will be described in detail with reference to the embodiments shown in the drawings.

  FIG. 9 shows the tightening mechanism 24. In the illustrated example, the tightening mechanism portion 24 is an extended tightening mandrel, can be attached and fixed to the tightening chuck 23, and plays a role of grasping and tightening a tool by an internal clamp. The tightening mechanism portion 24 includes a tightening mechanism portion trunk 14 formed in a tapered shape, a tightening member 20 that is an extended tightening mandrel in the illustrated example, and a connection mechanism portion 25. A guide groove 15 is formed in the tightening mechanism portion trunk 14. The guide groove 15 extends along an axis parallel to the longitudinal axis of the tightening mechanism 24 in the non-rotating (translation) linear motion region 15.1. Further, a rotational motion region 15.2 continuously extends at a right angle from the upper end (end side end portion) of the translational motion region 15.1. The connection mechanism portion 25 is supported by the convex shaft body 19 and includes the cover 9, the segment 6, and the rotating ring 4. In the illustrated example, the convex shaft body 19 includes a short cylindrical portion and a shaft portion protruding from the center portion of the lower surface, and the rotating ring 4 and the segment 6 are disposed around the shaft portion. A cover 9 is connected to the lower end portion of the shaft portion. From the rotating ring 4, the lock member 5 protrudes sideways in the form of a tenon or convex shaft. The rotating ring 4 is connected to the segment 6 through an attachment / fixing member 8. The segment 6 is formed by three latching claws 26 in the illustrated embodiment, as depicted in FIG. These latching claws 26 can swing outward. As is known from FIG. 5, the latching claw 26 has a shape in which one end portion is rounded and chamfered in order to arrange it in a space-saving manner, and the other end portion is shaped to match the shape of the one end portion. It is equipped with a claw receiving part that has entered the bay. As further shown in FIG. 9, each latching claw 26 is provided with one attachment / fixing member 8 and one guide 11. These three guides 11 can be arranged in the guide elongated hole 10 in the cover 9 that is matched to them, and can be displaced in the guide elongated hole 10. The cover 9 is connected to the convex shaft body 19 through the connection member 21. The convex shaft body 19 serves to arrange the cover 9 in the correct rotational direction position / orientation and thereby arrange the guide slot 10 in the correct rotational direction position / orientation. As is known from FIG. 7, the pressing shaft 16 is provided with a pressing piece 16 that receives a spring action in the pressing piece receiving portion 17. The pressing piece 16 protrudes into the extracted portion 18 of the rotating ring 4.

  FIG. 1 shows the clamping chuck 23, the chuck trunk body 3, and the guide opening 1. A tightening mechanism portion 24 is inserted into the guide opening 1 of the chuck trunk 3 and attached and fixed. The tightening mechanism 24 is shown in a form removed from the other in FIG. 9 and has been described above. In the chuck trunk body 3, the tightening mechanism portion 24 can be shifted in position by the push / pull rod using the drive portion 2. For example, the tip of the push / pull rod can be connected to the sleeve-like drive unit 2 by screw connection or an HSK shank. The drive unit 2 includes a plurality of separate parts for manufacturing reasons. The drive unit 2 includes a ring-shaped groove 12 on the inner peripheral surface, and a lock member receiving unit 7 that opens to the distal end side (upward in the drawing). Further, the fastening chuck 23 is provided with a fixing tool 13 in the form of a screw. The fixing tool 13 is screwed into a threaded hole extending in the radial direction in the chuck trunk body 3, and a distal end portion is inserted into a guide groove 15 provided on the outer peripheral surface of the tightening mechanism portion 24. Yes.

  Prior to assembly, the tightening mechanism 24 is aligned in the correct rotational position and orientation. For this purpose, the connection mechanism portion 25 including the cover 9, the segment 6, and the rotating ring 5 is rotated with respect to the convex shaft body 19 of the tightening mechanism portion 24. This rotation is performed until the pressing piece 16 slides into the extracted portion 18 of the rotating ring 4. As a result, the position / orientation in the rotational direction on the surface of the angle of the lock member 5 with respect to the tightening mechanism 24, that is, the rotational angle or rotational position is fixed (FIG. 7).

  FIG. 3 shows the role of the fixture 13 in the fastening chuck 23 and the role of the guide groove 15 in the fastening mechanism portion 24 when the fastening mechanism portion 24 is inserted into the fastening chuck 23 by linear translation. Show. By inserting the fixture 13 into the linear translational movement region 15.1 in the guide groove 15 of the tightening mechanism portion 24, easy alignment of the tightening mechanism portion 24 with respect to the tightening chuck 23 can be reliably realized. That is, centering and positioning in the rotation direction can be easily and reliably realized. If the tightening mechanism 13 has reached the end of the linear translational movement region 15.1, ie, if the tightening mechanism 24 has been inserted, the locking member 5 is tightened as is known from FIG. It slides into the lock member receiving portion 7 of the attached chuck 23.

  In order to fix the tightening mechanism 24 to the tightening chuck 23, the tightening mechanism 24 is rotated. By this rotation, as shown in FIG. 4, the fixture 13 is disposed in the rotational movement region 15.2. As shown in FIG. 1, when the tightening mechanism portion 24 is rotated, the latching claw 26 is moved outward and pushed into the groove 12 of the tightening chuck 23. By being pushed in in this way, fixing and attaching the tightening mechanism portion 24 is realized by meshing or fitting.

  In order to push the latching claw 26 outward, it is necessary to realize mutual movement inside the connection mechanism portion 25. Such mutual movement is realized by the following. In other words, the lock member 5 placed in the lock member receiving portion 7 is realized by fixing the rotating ring 4 so as not to rotate when the tightening mechanism portion 24 is rotated. The mutual rotation is realized as follows. That is, the latching claw 26 is connected to the rotating ring 4 through the attachment / support member 8. When rotating the tightening mechanism portion 24, the rotating ring 4 is fixed by the lock member 5 put in the lock member receiving portion 7. In this way, mutual rotation is realized. On the other hand, since the latching claw 26 is connected by the mounting / supporting member 8, the latching claw 26 moves relative to the rotating ring 4 and shifts the position / posture outward. At this time, the rotating shaft 4 of the latching claw 26 is fixed by the mounting / supporting member 8. Further, the shifting of the position / posture of the latching claw 26 to the outside is realized as follows. In other words, when the tightening mechanism portion 24 is rotated, the guide 11 of the latching claw 26 performs a position shift within the guide long hole 10 of the cover 9.

  In order to replace or remove the tightening mechanism portion 24, the tightening mechanism portion 24 is rotated in the reverse direction to shift the position / posture of the fixture 13 within the range of the rotational movement region 15.2. Thus, the guide member 11 can be shifted in the guide slot 10. In this way, the latch pawl 26 can be swung inward as shown in FIG. 2 so that it is no longer positioned in the groove 12. In order to remove the tightening mechanism portion 24 from the tightening chuck 23, the tightening mechanism portion 24 is linearly translated. That is, it is pulled straight out in the chuck axis direction. At this time, the lock member 5 slides out of the lock member receiving portion 7.

  The tightening mechanism 24 and the tightening chuck 23 are shown in FIGS. 5 and 6 in a position / posture in which the mutual interlock is released and a position / posture in which the mutual interlock is released. FIG. 5 shows a VV cross section of FIG. 2 in a position / posture where the interlock is released. FIG. 6 shows a VI-VI cross section of FIG. 1 in an interlocked position / posture. When the tightening mechanism portion 24 is rotated, not only the convex shaft body 19 is rotated, but also the connecting member 21 connecting the cover 9 and the convex shaft body 19 is rotated. During this rotation, the rotating ring 4 is fixed and held by the lock member 5, and the guide 11 is displaced in the guide slot 10, whereby the latching claw 26 is moved outward. It is pushed into the groove 12 (see FIG. 6). FIG. 5 shows a position / posture where the interlock is released, that is, a state where the latching claw 26 swings inward.

  As is known from FIGS. 5 and 6, each segment 6 is provided with a guide 11 and a mounting / fixing member 8. The attachment / fixing member 8 connects the latching claw 26 to the rotating ring 4, and this connection enables mutual movement inside the connection mechanism portion 25. Further, the rotation shaft of the latching claw 26 is fixed by the mounting / fixing member 8.

  As can be seen from FIG. 8, the clamping chuck 23 according to the present invention is also suitable for attaching another clamping mechanism 23 without having to replace the clamping chuck. The other tightening mechanism 23 is a collet chuck in the illustrated example. As is further known from FIG. 8, the tightening mechanism portion 23 is connected to the tightening chuck 23 with another connection mechanism portion 25, that is, without using the latching claw 26 that performs rotation and key insertion fixing. Connection and release can be performed. After the collet chuck 22 is inserted into the tightening chuck 23, the fixture 13 protrudes into the tightening mechanism section extraction portion 27. Tightening is performed by a pulling / pushing rod not shown in detail. The pulling / pushing rod shifts the position / posture of the drive unit 2. The drive unit 2 is connected to the collet chuck 22 or the tightening mechanism unit 24.

DESCRIPTION OF SYMBOLS 1 ... Guide opening; 2 ... Drive part; 3 ... Chuck trunk body;
4 ... rotating ring; 5 ... lock member; 6 ... segment;
7: Holding member receiving portion; 8 ... Mounting / fixing member; 9 ... Cover;
10 ... guide slot; 11 ... guide; 12 ... groove; 13 ... fixture;
14 ... Tightening mechanism part trunk; 15 ... Guide groove;
15.1 ... linear translational movement area of the guide groove; 15.2 ... rotational movement area of the guide groove;
16 ... Pressing piece; 17 ... Pressing piece receiving part; 18 ... Punching part;
19 ... Convex shaft body; 20 ... Fastening member; 21 ... Connection member;
22 ... Collet chuck; 23 ... Fastening chuck; 24 ... Fastening mechanism;
25 ... Connection mechanism part; 26 ... Stopping claw; 27 ... Tightening mechanism part extraction part

Claims (16)

A chuck trunk (3) having a guide opening (1) and a drive unit (2);
In a clamping chuck (23) comprising at least one clamping mechanism (24) insertable into the guide opening (1),
The tightening mechanism portion (24) includes a rotating body (4), a lock member (5), and a segment (6).
The locking member (5) is configured to fix the rotating body (4) to the chuck trunk body (3) so as not to rotate when the tightening mechanism portion (24) is inserted into the guide opening (1).
The segment (6) rotates with respect to the rotating body (4) when the tightening mechanism portion (24) is rotated around the longitudinal axis in the guide opening (1). 24) A clamping chuck characterized in that the position / posture can be shifted outward toward the chuck trunk (3) in order to fix 24) to the chuck trunk (3).   In order to receive the lock member (5) protruding sideways from the rotating body (4), the chuck trunk (3) is provided with a lock member receiving portion (7) provided in the radial direction. The fastening chuck according to claim 1. The segment (6) and the rotating body (4) are provided with an attachment / fixing member (8) for connecting them,
The tightening mechanism (24) is provided with a cover (9) having a guide slot (10),
The segment (6) is provided with a guide tool (11), and the guide tool (11) is displaced in the guide slot (10) during the rotational movement of the tightening mechanism (24). The tightening chuck according to claim 1 or 2, characterized by the above-mentioned.   The fastening chuck according to any one of claims 1 to 3, wherein the segment (6) is a latching claw (26) obtained by dividing a ring or a disk in the circumferential direction.   2. A groove (12) is provided in the drive part (2), and this groove (12) serves to receive a segment (6) whose position and posture can be shifted outward. The fastening chuck according to any one of to 4. A plurality of segments (6) are evenly distributed in the circumferential direction, and a number of guides (11) and attachment / fixing members (8) corresponding to the number of segments (6) are provided.
The cover (9) is provided with the same number of guide slots (10) as the number of guides (11),
The drive part (2) is provided with a corresponding number of recesses (12) or groove-like recesses (12) extending over the entire inner circumference of the drive part (2). The fastening chuck according to any one of to 5. The chuck trunk (3) is equipped with a fixture (13),
The tightening mechanism portion trunk (14) of the tightening mechanism portion (24) is provided with a guide groove (15), and the guide groove (15) allows the fixture (13) to be tightened with the tightening mechanism portion (15). The position / posture in the translation direction and the rotation direction can be shifted with respect to the tightening mechanism portion (24) when inserted and rotated. The fastening chuck described in 1.   The clamping mechanism portion (24) is provided with a pressing piece (16) that performs a spring action in the pressing piece receiving portion (17). The pressing piece (16) rotates the clamping mechanism portion (24). When rotating relative to the body (4), the rotor (4) is slid into the extracted portion (18), and the rotational direction position and orientation of the rotating body (4) and the lock member (5) The clamping chuck according to claim 1, which is useful for matching with respect to 23). A tightening mechanism section (24) comprising a tightening mechanism section trunk (14), a convex shaft body (19) disposed in the tightening mechanism section trunk (14), and a tightening member (20). )
The connection mechanism (25) is provided at the end opposite to the fastening member (20), and the connection mechanism (25) is supported by the convex shaft body (19).
The connection mechanism section (25) includes a rotating body (4), a lock member (5) provided on the rotating body (4), and at least one segment (6) capable of shifting the position / posture outward. A tightening mechanism comprising a cover (9) and a combination. The locking member (6) protrudes laterally from the rotating body (4),
10. The tightening mechanism according to claim 9, wherein the rotating body (4) is connected to the segment (6) through an attachment / fixing member (8).   The cover (9) is connected to the convex shaft body (19) through the connecting member (21) in order to align the rotational position and orientation of the cover (9) with respect to the convex shaft body (19). The tightening mechanism part according to claim 9 or 10, characterized in that   The cover (9) is connected to the convex shaft body (19) through the connecting member (21) in order to align the rotational direction position and orientation of the cover (9) with respect to the convex shaft body (19). The tightening mechanism part according to claim 9 or 10. The segment (6) and the rotating body (4) are provided with an attachment / fixing member (8) for connecting them,
The tightening mechanism (24) is provided with a cover (9) having a guide slot (10),
The tightening mechanism according to any one of claims 9 to 12, wherein the segment (6) is provided with a guide tool (11) attached in the axial direction.   The fastening mechanism part according to any one of claims 9 to 12, wherein the segment (6) is a latching claw (26) obtained by dividing a ring or a disk in a circumferential direction. A plurality of segments (6) are evenly distributed in the circumferential direction, and a number of guides (11) and attachment / fixing members (8) corresponding to the number of segments (6) are provided.
The cover (9) is provided with the same number of guide slots (10) as the number of guides (11),
The drive part (2) is provided with a corresponding number of recesses (12) or groove-like recesses (12) extending over the entire inner circumference of the drive part (2). The tightening mechanism described in 1.   A pressing piece (16) that performs a spring action is provided in the pressing piece receiving part (17), and this pressing piece (16) rotates the tightening mechanism part (24) relative to the rotating body (4). At this time, it slides into the extracted part (18) of the rotating body (4) and helps to adjust the rotational position and orientation of the rotating body (4) and the lock member (5) with respect to the fastening chuck (23). The tightening mechanism according to any one of claims 9 to 15.